These Imperial Plus Toughened Champagne Flutes 5.25oz / 15cl are part of the comprehensive Fully Toughened Imperial Plus range which provides the complete glassware offering that any bar or restaurant could require. Fully Toughened glassware has been strengthened across its entire body making the glass resistant to impact damage at all points. When Toughened glass does break, it will break into small fragments making it impossible to cause serious lacerations.